Cracking 8 BIT ST72F324K4 Locked MCU Flash Program starts from remove silicon package over microprocessor and then readout embedded firmware from microcontroller’s flash memory, and copy original binary to new MCU;

In the interrupt input column, “eiX” defines the associated external interrupt vector. If the weak pull-up column (wpu) is merged with the interrupt column (int), then the I/O configuration is pull-up interrupt input, else the configuration is floating interrupt input.

In the open drain output column, “T” defines a true open drain I/O (P-Buffer and protection diode to VDD are not implemented). See See “I/O PORTS” on page 45. and Section 12.9 I/O PORT PIN CHARACTER- ISTICS for more details.

As shown in below Figure, the MCU is capable of ad- dressing 64K bytes of memories and I/O registers. The available memory locations consist of 128 bytes of register locations after , up to 1024 bytes of RAM and up to 32 Kbytes of user program memory. The RAM space includes up to 256 bytes for the stack from 0100h to 01FFh after cracking st72f321m9 microprocessor flash memory.

OSC1 and OSC2 pins connect a crystal/ceramic resonator, or an external source to the on-chip oscillator; see Section 1 INTRODUCTION and Section 12.6 CLOCK AND TIMING CHARACTERISTICS for more details.

On the chip, each I/O port has 8 pads. Pads that are not bonded to external pins are in input pull-up configuration after reset. The configuration of these pads must be kept at reset state to avoid added current consumption.

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